The 25-year-old punk-pop princess is asking a ruling to block Deryck, 29, from receiving spousal support.

Court records show fellow Canadian, Deryck, was granted a request to add Lavigne’s last name to his in December 2007.

Avril announced the split a month ago on her Web site. “Deryck and I have been together for 6-and-a-half years.

“We have been friends since I was 17, started dating when I was 19, and married when I was 21,” she explained. “I am grateful for our time together, and I am grateful and blessed for our remaining friendship.

“I admire Deryck and have a great amount of respect for him. He is the most amazing person I know and I love him with all my heart. Deryck and I are separating and moving forward on a positive note.”